ACUTE EFFECTS OF A RESISTED DYNAMIC WARM-UP PROTOCOL ON JUMPING PERFORMANCE
Journal Title: Biology of Sport - Year 2014, Vol 31, Issue 4
Abstract
This study aimed to investigate the kinematic and kinetic changes when resistance is applied in horizontal and vertical directions, produced by using different percentages of body weight, caused by jumping movements during a dynamic warm-up. The group of subjects consisted of 35 voluntary male athletes (19 basketball and 16 volleyball players; age: 23.4 ± 1.4 years, training experience: 9.6 ± 2.7 years; height: 177.2 ± 5.7 cm, body weight: 69.9 ± 6.9 kg) studying Physical Education, who had a jump training background and who were training for 2 hours, on 4 days in a week. A dynamic warm-up protocol containing seven specific resistance movements with specific resistance corresponding to different percentages of body weight (2%, 4%, 6%, 8%, 10%) was applied randomly on non consecutive days. Effects of different warm-up protocols were assessed by pre-/post- exercise changes in jump height in the countermovement jump (CMJ) and the squat jump (SJ) measured using a force platform and changes in hip and knee joint angles at the end of the eccentric phase measured using a video camera. A significant increase in jump height was observed in the dynamic resistance warm-up conducted with different percentages of body weight (p<0.05). On the other hand, no significant difference in different percentages of body weight states was observed (p>0.05). In jump movements before and after the warm-up, while no significant difference between the vertical ground reaction forces applied by athletes was observed (p>0.05), in some cases of resistance, a significant reduction was observed in hip and knee joint angles (p<0.05). The dynamic resistance warm-up method was found to cause changes in the kinematics of jumping movements, as well as an increase in jump height values. As a result, dynamic warm-up exercises could be applicable in cases of resistance corresponding to 6-10% of body weight applied in horizontal and vertical directions in order to increase the jump performance acutely.
Authors and Affiliations
Murat Cilli, Ertugrul Gelen, Suat Yildiz, Turgut Saglam, Merve Camur
Keywords
Related Articles
- EP ID EP59222
- DOI -
- Views 68
- Downloads 0
Body balance parameters established with closed and open eyes in young and elderly men
The aim of the study was to check whether there are any differences in the level of body balance between younger and elderly men. Body balance was measurements by computer posturographic system in two variants, i.e. a) w...
Adolescents’ physical activity and its related cognitive and behavioural processes
The purpose of the study was to examine adolescents’ physical activity and identify differences in cognitive and behavioural processes according to the stages of physical activity. Participants were 13 to 18 year old stu...
Absolute lactate threshold predicts endurance performance in master athletes
In master athletes the relationship between lactate threshold (LT) and endurance performance is unclear, possibly due to age-related decrease in VO2peak. To determine whether an absolute measure of LT was a significant p...
<strong><em>ACTN3 </em>GENOTYPE IS </strong><strong>ASSOCIATED WITH TESTOSTERONE LEVELS OF ATHLETES</strong>
α-Actinin-3 (ACTN3) has been proposed to regulate skeletal muscle differentiation and hypertrophy through its interaction with the signalling protein calcineurin. Since the inhibition of calcineurin potentiates the produ...
APPLICATION OF ALLOMETRY FOR DETERMINATION OF STRENGTH PROFILE IN YOUNG FEMALE ATHLETES FROM DIFFERENT SPORTS
The goal of the study was to determine a strength profile in young female athletes practising different sports and to use allometry to evaluate muscular strength with respect to body mass. The study included 42 women who...